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Friday, August 28, 2009

Attributes of Malignant Tumors and Benign Tumors - Lesson 95



Tumors or neoplasms are masses or growths that arise from normal tissues. They may be either malignant (progressive and lethal) or benign (not lethal and not progressive). There are several differences between benign and malignant tumors.
Differences between a malignant tumors and benign tumors:  Benign tumors grow slowly. Malignant tumors grow rapidly as their ells are multiplied speedily. Benign tumors are often encapsulated that is contained within a fibrous capsule or cover. So that the tumor cells do not invade the surrounding tissue.

Malignant tumor growth is characteristically invasive and infiltrative extending beyond the tissue of origin into adjacent organs. Benign tumors are composed of highly organized and specialized that is differentiated cells, which closely resemble normal, mature tissue.

Malignant tumors are composed of cancerous cells that resemble primitive or embryonic cells that do not have the capacity for mature cellular functions. These types of malignant tumors are called anaplasia. Anaplasia means that the cancerous cells are differentiated that is lapsing to a less developed state in contrast to the normal differentiated tissue of their origin. Anaplastic cells lack an orderly arrangement. Instead, the tumor cells are found piled one on top of the other in a disorganized fashion.

Cells from benign tumors do not spread to form secondary tumor masses in other places in the body. Malignant tumors, however, can detach themselves from the primary or original tumor site travel through the bloodstream and lymphatic system and establish a new tumor site at a distant region within the body. This type of secondary growth is called metastasis.

In the next lesson we will see about MESOTHELIOMA RADIATION THERAPY TREATMENTS. Okay.

Come on.

To go to the next lesson please click the link below.